sand dunes.

"What's your hurry?" asked Mr. Maxwell, who was with the
submarine agent. "You turned around as if you were shot when
you saw that man and the lad. There didn't appear to be any
cause for such a hurry. From what I could hear they were
talking about a submarine. You're in the same business. You
might be friends."

"Yes, we might," admitted Mr. Berg with a peculiar smile;
"but, unless I'm very much mistaken, we're going to be
rivals."

"Rivals? What do you mean?"

"I can't tell you now. Perhaps I may later. But if you
don't mind, walk a little faster, please. I want to get to a
long-distance telephone."

"What for?"

"I have just overheard something that I wish to
communicate to my employers, Bentley & Eagert."

"Overheard something? I don't see what it could be, unless
that lad--"

"You'll learn in good time," went on the submarine agent.
"But I must telephone at once."